imperturbable
Cross references: 1. cool im.per.turb.able \.im-p*r-'t*r-b*-b*l\ \-ble-\ aj [ME, fr. LL imperturbabilis, fr. L in- + perturbare to pertur]b : marked by extreme calm, impassivity, and steadiness : SERENE - im.per.turb.ably av
Cross references: 1. cool im.per.turb.able \.im-p*r-'t*r-b*-b*l\ \-ble-\ aj [ME, fr. LL imperturbabilis, fr. L in- + perturbare to pertur]b : marked by extreme calm, impassivity, and steadiness : SERENE - im.per.turb.ably av